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Explore cutting-edge techniques for optimizing JavaScript performance in this 41-minute conference talk from performance.now() 2018. Learn how to measure and improve JavaScript's impact on your site using the User Timing Spec and Long Tasks API, move expensive operations off the main thread, leverage code coverage tools to reduce JavaScript footprint, and understand the advantages of defer over async for script loading. Gain insights into performance metrics, browser evolution, and the increasing importance of JavaScript optimization in modern web development. Discover practical strategies to enhance site speed and user experience through effective JavaScript management.
